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20世纪80年代华中地区H7N8禽流感病毒的分子特征

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摘要 对1985年从湖北家禽分离的禽流感毒株A/duck/Hubei/216/1985/H7N8进行了分子特征和致病性研究.A/duck/Hubei/216/1985/H7N8的HA蛋白在HA1和HA2连接处,含有连续多碱性氨基酸(-PEIPKGRG-),为低致病性分子特征,而且其M,NP,NS,PA和PB2基因的宿主相关氨基酸位点与H5N1病毒相似.进化分析结果显示,A/duck/Hubei/216/1985/H7N8的M,NS和PB2基因与Gs/Guangdong/1996/H5N1亲缘关系较为紧密,表明20世纪80年代中期高致病性Gs/Guangdong/1996/H5N1毒株的部分内部基因在华中地区流行.动物感染实验结果显示,A/duck/Hubei/216/1985/H7N8对鸡和小鼠为低致病性,与HA基因的分子特征相一致.
出处 《科学通报》 EI CAS CSCD 北大核心 2010年第12期1122-1127,共6页 Chinese Science Bulletin
基金 国家重点基础研究发展计划(编号:2010CB534005) 国家科技基础性专项(编号:2009ZX10004-109 2007FY210700) 国家自然科学基金(批准号:30970024 30900060) 中国科学院知识创新工程重要方向性项目(编号:KSCX2-YW-N-065 KSCX2-YW-R-157 KSCX2-YW-R-158 KSCX2-YW-R-159 INFO-115-C01-SDB3-01 INFO-115-C01-SDB4-21 IN-FO-115-D02 IN-FO-115-C01-SDB2-02)资助
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